Blowout limits of cavity-stabilized flame of supercritical kerosene in supersonic combustors

Taichang Zhang, Jing Wang, Li Qi, Xuejun Fan, Peng Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

Blowout limits of cavity-stabilized flame of supercritical kerosene were experimentally studiedbyusing Mach 2.5 and 3.0 direct-connect supersonic model combustors operated under various air and fuel conditions. Specifically, the effects of the stagnation temperature and the stagnation pressure on the blowout limits were investigated for supercritical kerosene injected from the wall upstream of a cavity flameholder in a Mach 2.5 combustor. Experiments were performed under the same conditions for supercritical keroseneinjected from the rearpartofthe cavity bottomtostudy the influence of the location of fuel injection. The blowout limits of supercritical kerosene injected from the wall upstream of the cavity were further investigated in a Mach 3.0 combustor. Besides the effects of the stagnation temperature and stagnation pressure, the effect of the divergence angle of the combustor on the lean-fuel blowout limit was studied. Results show that there exist two blowout limits corresponding to the lean- and rich-fuel conditions for a given stagnation temperature. The location of fuel injection has substantial influence on the blowout limits, whereas the influenceof the stagnation pressure and the divergence angle of the combustor can be neglected in the range of interest.
Original languageEnglish
Pages (from-to)1161-1166
Number of pages6
JournalJournal of Propulsion and Power
Volume30
Issue number5
DOIs
Publication statusPublished - 1 Sep 2014

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science

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